Network settings does not show my WiFi network name (though the same list of other networks I see via my laptop, phone etc do show up here).No matter how many times I try to scan for network or manually set up with SSID and password, I still get "unable to connect, check settings".

I was finally able to establish a connection when I plugged Ethernet directly into Blu Ray but never wirelessly.No problems with any other WiFi devices.

I've dealt with tech support both my provider and with panasonic but have gotten nowhere. Presumably they are just bots because they never really address the questions.

The Arris site event logs show many "critical" "error" messages with details like "Missing BP configuration" , "Resetting the cable modem" and so on and but I don't know how to interpret the information enough to try correcting , nor what service tech I should be talking to.

Following are some of theof the event logs and status readings in case that's helpful.Let me know whether I should include other data.

Network settings does not show my WiFi network name (though the same list of other networks I see via my laptop, phone etc do show up here).No matter how many times I try to scan for network or manually set up with SSID and password, I still get "unable to connect, check settings".

I was finally able to establish a connection when I plugged Ethernet directly into Blu Ray but never wirelessly.No problems with any other WiFi devices.

I've dealt with tech support both my provider and with panasonic but have gotten nowhere. Presumably they are just bots because they never really address the questions.

The Arris site event logs show many "critical" "error" messages with details like "Missing BP configuration" , "Resetting the cable modem" and so on and but I don't know how to interpret the information enough to try correcting , nor what service tech I should be talking to.

Following are some of theof the event logs and status readings in case that's helpful.Let me know whether I should include other data.

2. Blu-Ray used to connect to Apple router's WiFi, but does not see the WiFi anymore.

Correct. Yet the Blu-ray settings does show numerous other WiFi networks , just not ours)

3. Arris Modem and Apple router hardware have NOT been changed.Correct. No changes to hardware.

4. Arris Modem and Apple router settings have NOT been changed.

Correct, No changes that I am aware of. Do not know whether any auto-updates or changes from the ISP have happened, tho)

5. Arris Modem and Apple router have NOT been power-cycled.

No. They have both been power-cycled several times, not always because of this issue. 6. All other devices using Apple router's WiFi still work correctly.

Correct.

7. AppleTV still connects to TV correctly using Apple router's WiFi.

Correct.

Can you connect the Blu-Ray to a LAN port on the Apple router using ethernet cable?Yes, Blu-Ray will make a wired connection via LAN to Apple router via ethernet but it no longer connects to a WiFi network as of about a month ago.

That should not need a password. Does Blu-Ray find the wired LAN connection OK?

Yes, Blu-Ray will make a wired connection when the ethernet cable is removed from router and connected directly into the modem

Does your TV connect through AppleTV properly (you can watch Blu-Ray video?)Do you mean watching HD video from streaming services such as N-flix?If so, yes; we can stream via Apple TV to TV.

Doubtful. Either your blu-ray player or your Airport wireless settiings are messed up. Since everything else connects wirelessly just fine, my money is on the blu-ray player, but just to humor me can you check your Airport settings via the Airport Utility to see if you somehow turned off the 2.4 ghz radio? If the blu-ray is several years old it probably doesn't recognize the 5 ghz frequency.

Airport Utility ------> Click on the Airport icon -----> Edit ------> Wireless tab -----> Wireless Options -----> Are the 2.4 and 5Ghz channels set to automatic, to a specific channel, or Off?